Key parameters at a glance
- A radius of 1.61 Earth radii
- A mass of 7.54 Earth masses
- Surface gravity around 2.92 g
- An orbital period of 0.571 days
- Semi-major axis 0.0132 AU
- Equilibrium temperature 2,324 K (2051 °C)
- Distance from Earth 797.74 light-years
- Earth Similarity Index 0.097
- Travel time at Voyager 1 speed 14,068,232 years
1 sibling around EPIC 220674823
EPIC 220674823 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| EPIC 220674823 b this | Super-Earth | 1.61 | 7.54 | 0.571 | 2,324 | 2016 |
| EPIC 220674823 c | Sub-Neptune | 2.71 | 7.90 | 13.341 | 838 | 2016 |
EPIC 220674823 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#566of 1176
top 48.0%
This planet
1.61R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | EPIC 220674823 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.61 | 11.21 |
| Mass (M⊕) | 1.00 | 7.54 | 317.83 |
| Density (g/cm³) | 5.51 | 10.68 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.92 | 2.53 |
| Insolation (S⊕) | 1.00 | 4,656.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 7.540 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 266015990
Gaia DR2
Gaia DR2 2582617711154563968
Gaia DR3
Gaia DR3 2582617711154563968
System
EPIC 220674823
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts roughly 13.7 hours long on a nearly circular orbit at a mean orbital distance of 0.0132 AU.
Transit Fingerprint
Depth
0.028 %
Duration
1.599 h
Impact parameter b
0.077
Rp / R★
0.014800
Transit midpoint (BJD)
2,459,473.5712
Photometric dip
Transit produces a flux drop of 285 ppm lasting ≈ 1.60 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014800
Semi-major axis / stellar radius
2.858
Impact parameter (b)
0.077
RV semi-amplitude (K)
6.050 m/s
Transit mid-time (BJD)
2,459,473.5712
Angular separation (arcsec)
0.05400
Eq. Temperature
2,324K
(2051 °C)
Insolation (S⊕)
4,656.00
Earth = 1.00
Earth Similarity (ESI)
0.097
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Adams et al. 2017Instrument
Kepler CCD Array
Publication
2017-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at K2 (12 shown).
Host System: EPIC 220674823
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,578 K — cooler than the Sun (5,778 K)
Estimated Age
7.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.990 R☉
Stellar Mass
0.913 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.408 dex
Stellar density
1.350 g/cm³
Systemic radial velocity
-14.79 km/s
Rotational v·sin i
2.62 km/s
Activity index (log R'HK)
-5.135
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
4.060 mas
Total Proper Motion
61.004 mas/yr
PM Right Ascension
60.96 mas/yr
PM Declination
2.24 mas/yr
Galactic Cartesian (pc)
x = 0.957 · y = 0.222 · z = 0.187
Equatorial (J2000)
RA 13.08002° · Dec 10.79471°
Galactic ℓ, b
123.284° · -52.076°
Ecliptic λ, β
16.223° · 4.784°
HTM-20 index
85471358
Similar Worlds
K2-173 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 745.7 ly
Kepler-416 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 2,253.1 ly
Kepler-100 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 993.6 ly
Kepler-1448 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 2,507.8 ly
Kepler-1322 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 4,404.1 ly
Kepler-1610 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.61 R⊕ · 2,819.1 ly